Nonglare shade for automobile lamps



Feb. 27, 1923. 1,446,925.

0. c. OLNEKI.

NONGLARE SHADE FOR AUTOMOBILE LAMPS.

FILED OCT. 7. 1921.

' is a specification.

Patented Feb. 27, 1923.

PATENT OFFICE.

oscna c. OLNEY, or LIMA, oirro.

. NONGLARE SHADE FOB AUTOMOBILE LAMPS.

Application filed October 7, 1921. Serial No. 506,133.

To all whom it may concern:

Be it known that I, OSCAR C. OLNEY, ,a

citizen of the United States, residing at Lima, in the county of Allenand State of Ohio, have invented certain new and useful Improvements inNonglare Shades for Automobile'Lamps, of which the following Myinvention relates to non-glare shades for automobile lamps and the like,adapted to cast a shade over that part of the reflector which reflectslight rays, in undesirable lamp by spring tension,

directions and thereby prevent glare and confine reflections of thelightbelow a certain height above the roadway;

Serious accidents have been caused by the intense beams of light fromautomobile head lamps, blinding and confusing persons crossingthoroughfares. A great partof this illumination v is unnecessary, tageis gained by that part of the illumination which does notstrike theroadway or its immediate surroundings, I

The object of my invention is to avoid accidents by preventing glarefrom automobile head lights; further, to prevent illumination reachingthat part of the reflector which reflects the rays of light inundesirable d1- rections; further, to prevent the light being heightover the a detachable hood adapted to be held about an incendescent lampglobe of an automobile whereby glare is avoided by preventing lightbeing reflected in undesirable directions or above apredetermined heightoverthe roadway.- My invention further consists in the compactconstruction, combination, arrangement and formation of the severalparts, and in the details of construction as herein set forth andclaimed.

In the drawing:

Fig. 1 is a side elevation of my improved device;

Fig. 2 is a front end elevation of the same;

Fig. 3 is a rear elevation;

Fig. 4 is a bottom view;

Fig. 5- is a bottom perspective view;

Fig. 6 is a vertical cross section of an automobile head lamp having myimproved asno advan-' therein. A glass plate 12 carried in remova- I blerim 13 is secured to the outer shell in front .of the reflector. Asocket 1 f adjusta-' ble endwise in bearings 15 and 16 respectively ofreflector ll and outer shell 10, has an incandescent lamp globe 17secured in the front end thereof in any usual manner. The rear end ofthe socket has connection by electrical conductors 18 to a suitablesource of electric current. A focusing screw 19 passes through a hole inthe outer shell and threaded into a bracket 20 on the socket, provides ameans for focusing the lamp bulb. A spring 21 is received about thescrew 19 between bracket 20 and shell 10 in order to hold the socket inadjusted position and provide for its forward .movement.

Myimproved non-glare shade consists of a shell 25 comprising a.quatdri-spherical portion 26 having a semi-cylindrical portion 27forming a continuation thereof. Portion 26 conforms generally to thesurface of the lamp globe. The lower edges of the semi-cylindricalportion 27 are convexly curved, as shown at 28. The shell 25 partlysurrounds the upper half of the lamp globe, and has a semi-circularopening 29 therein in which the neck of the globe is received.

A concave disk 32 is integrally-connected by a spring arm 33 tothe-extreme forward end of the shell.

This disk preferably hasan aperture 34 therein through which the ti 35of the incandescent globe is received. Light transmitting. openings 36are thus formed between the curved edges 28 and the disk 32.

In order to firmly hold the shade in position about the lamp globe, theshell is provided with slots 38 located radially with reference to thesemi-circular open ng 29, .and'adjacent the lower edges of the shell. Acoil spring 39 has its end coils received in the 'slots' 38, its middleportion being adapted to be retained behind a retaining lip 40, bentoutwardly from and inte rally formed with the lower edge of the dis 32..

. In use the shade is slipped over the u per part of the lamp by orcingthe dis 32 outwardly, through the medium of the spring. arm 33, andallowing the same to screw 19.

It will be observed that after the.- globe is thus positioned thequadrhspherical portion 26 and the semi-cylindrical"extension 27 of theshell 25, prevent any light rays striking the upper part ofthe,refiector. The light rays strike the lower portion of the reflectorin such manner as to be re flected forward and downward so that theywill fall upon the roadway at a predetermined distance in front of thevehicle, this distance being controlled by the forward and backadjustment of the globe. The disk 32 prevents the intensely brightfilament being visible, and further cuts off all direct rays exceptthose projected in a downward direction. Such rays of light as passthrough the openings 36 strike the reflector at the sides, whereuponthey are reflected to op posite sides of the roadway, which providesadequate non-glaring side illumination. The interior surfaces of thedevice prefer ably have a frosted or satinlfinish, that the light may bereflected thereby to the reflector in a difl'used manner, which in turnreflects this diffused light to the roadway without any glaring eflect.

My improved device forms a simple and effective means 'of preventingglare from automobile lamps, and is inexpensive to manufacture, theentire device consisting of but one single piece of formed sheet metaland a small spring. Y

What I claim as new and desire to secure by Letters Patent is:

mamas ing part of said lamp globe,'a concave disk having an aperturetherein through which the tip of said lamp globe is received, a springarm integrally connecting said disk with said shell, said shell having asemicircular opening therein in which the neck of said lamp globe isreceived, and tension means to hold said shell about said globe.

2. In a device of the character described, the combination of aparabolic reflector, a lamp globe adjustable axially therein, a hoodsecured about said globe comprising a shall having a semi-circularopening there in in which the neck of said lamp globe is received,a'concave disk having an aperture therein throughwhich the tip of saidlamp globe is received, a spring arm integrally connecting said diskwith said shell, said shell having retaining means adjacent saidsemi-circular opening and a retaining lip on said disk, tenslon means tohold said shell about said globe and comprising a coil spring, the endcoils of which are held by said retaining means and whose median portionis received behind said retaining lip.

3. In a device of the character described, a parabolic reflector, a lampglobe axially adjustable therein, a hood inclosing the upper part ofsaid lamp globe and comprising a shell so devised as to permit lightfrom said globe to be reflected only from the bottom and sides of. saidreflectorand in a downward direction, a concave disk positioned beforesaid globe and yieldably connected with said shell, whereby the directforward light rays of said globe are reflected to said reflector, saiddisk and said shell having light transmitting openings therebetweenwhereby light is permitted to strike the sides of said reflector, lightdiffusing surfaces on the interior of said shell, said concave diskhaving an outwardly extending retaining lip on its lower end, a coilspring about said globe,.the ends of which are secured to the rear edgesof said shell and whose middle portion is retained behind said retaininglip,'whereby said shell is firmly held in position about said globe.

' OSCAR C. OLNEY.

